Histopatologia do intestino de Pseudoplatystoma fasciatum (osteichthyes, pimelodidae) parasitados com cestodas proteocefalídeos e nematodas

This work describes intestine histopathology of Pseudoplatystoma fasciatum infected by endohelminths. Nineteen specimens were caught from Aquidauna River, Mato Grosso do Sul State, in October 2005 and submitted to necropsy, when intestine of each specimen was fixed with AFA solution during 12 h. Soon after, samples were immersed in buffered formalin and 24 h after, transferred to alcohol 70%. Study of histology sections was made to 5; m and stained with haematoxylin and eosin. It showed structures displaying helminths encapsulated by connective tissue in intestinal muscle with fibroplasy in several stages of capsule development. Were observed focus of necrosis in intestinal mucous and sub-mucous and helminthes cut obliquely in intestinal lumen. In addition, there was discreet mucous desquamation, associated to basal membrane thickness.

Imagens mí(s)ticas do gato

La valeur évocative, magique ou my(s)thique attribuée à la relation homme/animal peut être observée dans la culture depuis les époques lointaines. Dans la symbologie animale on trouve une immense charge sémantique justifiant les croyances les plus anciennes que les êtres humains ont déjà eues. Les animaux sont à la base du symbolisme mythique et ils se constituent en tant qu une source pour la riche production artistique englobant une grande variété iconographique et des textes de nature diverse. Ayant comme référence de la symbologie animal l image my(s)thique du chat, on observe la façon par laquelle le langage poétique contemple les profils mythiquesymboliques qui ont un rapport avec ce langage, tout en mettant en relief ceux qui ont des rapports aux relations entre le monde humain et le félin. À partir de l antologie tématique Assinar a pele ; des concepts théoriques ; et des abordages mitocritiques, nous cherchons à analyser les façons par lesquelles les différentes images mythiques associées au chat ont été explorées par la poésie. La définition d une typologie englobant des catégories telles : chat domestique, chat de rue, chat femme, chat nocturne, chat démoniaque et chat divin, parmi d autres, soutient la reconnaissance d identités possibles entre ces poèmes et signale la répétition d un répertoire symbolique divers en soi, mais, cohérent avec la présence du chat dans la société humaine à travers les temps

O gato doméstico (Felis catus) responde à sinais gestuais? possíveis implicações do convívio social

The cats (Felis catus) were domesticated about 9,500 years ago due to the advent of agriculture, being used to control the pests that devastated the food harvested. These animals went through an artificial selection and over generations and millennia had their behavior and morphology changed by humans. This process of domestication by man gave rise to a special ability, the understanding of human pointing gestures, clearly noticed while we feed our pets. Our goal in this study was to assess the comprehension of pointing gestures by cats and also verify the influence that social interactions exerts on the development of this ability. We found that experimental subjects from both groups, solitary animals and social animals, were able to follow human indication in order to find hidden food. However, social interaction had no effect on cats performances. The ability tested here probably evolved during the process of domestication of this species, and social interaction seems to exert little or no influence upon its expression

Esporotricose do gato doméstico (Felis catus): transmissão humana

No presente trabalho relata-se caso de paciente, funcionário de hospital veterinário, infectado através de arranhadura de gato doméstico portador de esporotricose. Inquérito domiciliar junto aos proprietários do animal fonte de infecção, revelou dois outros casos presuntivos de esporotricose humana transmitida por gatos, e confirmou o diagnóstico, por cultivo do Sporotrix schenckii, em 3 gatos domésticos adicionais. A esporotricose felina caracteriza-se por lesões cutâneas ulceradas e tendência à disseminação sistêmica e evolução fatal. A transmissão intra e inter-espécie é facilitada pela exuberância de fungos nas lesões cutâneas de felinos infectados.

Tétano em um gato

Relata-se neste artigo o caso de tétano em um gato macho de 3 anos 8 dias após a realização de orquiectomia bilateral, onde o histórico do animal associado aos achados clínicos e laboratoriais propiciaram a definição do diagnóstico. Mesmo após tratamento, o quadro evoluiu para tetania generalizada e óbito. Neste caso, a ação da neurotoxina na musculatura estriada esquelética do esfíncter uretral foi um fator agravante para a doença, levando à retenção vesical e azotemia pós-renal.

Fecundação in vitro no gato doméstico

In vitro fertilization, as a biotechnology applied to domestic and wild felids, is a valuable tool not only for the technique's improvement but also for the treatment of infertility and propagation of some populations. The previous knowledge of the physiology of the species and the understanding of mechanisms that interfere in their results are necessary for the technique success, as daylength influence, oocyte and spermatic selection and in vitro maturation.

Hemilaminectomia no tratamento de osteocondromatose vertebral em gato

O termo osteocondromatose refere-se a anormalidades proliferativas benignas de tecido cartilaginoso que acomete ossos de origem endocondral. Esta condição pode ser solitária ou múltipla e, neste último caso, é referida como exostose múltipla cartilaginosa (EMC). em felinos, é caracterizada pelo surgimento em animais adultos e por apresentar desenvolvimento progressivo. A osteocondromatose pode ser silenciosa e o paciente poderá apresentar sinais clínicos quando o desenvolvimento das exostoses resultar em compressão de estruturas vitais, como a medula espinhal. em felinos, a enfermidade não possui tratamento conhecido devido ao seu caráter recidivante. Este trabalho relata o êxito da aplicação de hemilaminectomia no tratamento de osteocondromatose vertebral em gato.

Histopatologia endometrial e fertilidade de éguas portadoras de pneumovagina tratadas através das técnicas cirúrgicas de Caslick ou Pouret

Com o objetivo de avaliar a evolução da condição endometrial após as cirurgias de Caslick e Pouret, empregou-se cada uma destas técnicas em um grupo de sete éguas, com histórico de subfertilidade e portadoras de pneumovagina, que justificassem, por sua conformação vulvar, a aplicação destas cirurgias. A avaliação da condição endometrial foi feita através dos exames de biópsia do endométrio, realizados imediatamente antes da cirurgia e aos 15 e 60 dias de pós-operatório e ainda pela verificação das taxas de fertilidade em ambos os grupos, durante a estação reprodutiva do ano subseqüente. A comparação dos resultados dos exames do período pós em relação ao pré-operatório evidenciou modificações histopatológicas suficientemente sutis para não levar a mudanças na classificação endometrial durante o período de observação, porém a melhora obtida nas taxas de fertilidade nos grupos experimentais permitiram concluir que as cirurgias corretivas de Caslick e Pouret proporcionaram melhora do desempenho reprodutivo de éguas portadoras de pneumovagina.

Metabolismo (lipídios e proteínas) e histopatologia do cérebro de ratos recém nascidos, jovens e adultos, submetidos a desnutrição proteico calórica, tipo marasmo

Brains of Wistar male rats (newborns, youngs and adults) submitted to protein-calorie deprivation for different periods (27, 33 and 60 days) were studied histologically and biochemically (protein and lipids contents). Lower levels of lipid, particularly among young rats, were observed in all groups. The protein levels were also significantly lower in the newborns, only slightly diminished in the youngs and not altered in the adults. On the other hand the histological study made in all groups did not show any qualitative modifications. The authors concluded that the protein-calorie deprivation affects the brain composition markedly in the earlier periods of life when the developing rate is greater. This could result in irreversible brain damage.

Anatomia do músculo abdutor crural caudal do gato doméstico (Felis catus domesticus, Linnaeus 1758)

The frequency and the morphology of the abductor cruris caudalis muscle were studied in 58 adult unknown breed cats. The sample included 36 females and 22 males. After the dissection, were found a frequency for the presence of the same muscle of 98.3%. The abductor cruris caudalis muscle appears symmetrically in 35 females (97.2%) and 22 males (100.0%). When present, it were originated on the transversal process of the 1st vertebrae caudales, in the glutea region, below the gluteus superficialis muscle, throughing almost all the thigh under biceps femoris muscle, where it make a parallel relation with the sciatic nerve, receiving nervous ramifications of the same in 78.3% of the cases. The medium found for the width and thickness of his muscle venter was respectively of 2.03 mm and 0.35 mm. Its insertion occurs on the biceps femoris muscles approximate to the fascia cruris, where both finish fusing theirselves.

Estudo anatômico e distribuição das papilas valadas no gato doméstico

The tongue of domestic animals varies in size and shape and according to these animals feeding habits, there are different degrees of tongue surface specialization. At the dorsal surface of the tongue lingual papillae can be observed, such as the vallate papillae, related to taste perception. With the help of a magnifying glass, differences in the number, size and distribution of vallate papillae were studied. Fifty five tongues of adult domestic cats from both sexes (38 females and 17 males) were analyzed. The samples were fixed in 10% buffered formalin. The vallate papillae were found to be symmetrically distributed on 21 tongues (38.18%). However, it was observed that in some of the tongues the number of vallate papillae varied when one side of the tongue was compared to its contralateral side. The vallate papillae showed different shapes: elongated (42.58%), oval (31.61%), round (25.48%) and pear shaped (0.33%). The vallate papillae were classified into 10 different categories: symmetrical I (2 right and 2 left), II (3:3), III (4:4) and asymmetrical IV (3:2), V (4:2), VI (2:3), VII (4:3), VIII (5:3), IX (3:4) and X (4:5). Measurements of length and width were made with averages of 0.84 ± 0.23 mm and 0.55 ± 0.18 mm, respectively, besides the calculation of the total area of these papillae per tongue, that showed average of 2,74 ± 0,31 mm 2 in males and 1,94 ± 0,14 mm 2 in females However, upon examining the lingual papillae of the cat tongues, specimens demonstrating 7, 8 or 9 vallate papillae, arranged in pairs (4:3, 5:3, 3:4 and 4:5) by category, were observed in this study but not cited in the literature.

Ramificação e distribuição dos nervos frênicos no músculo diafragma do gato doméstico

The ramification and the distribution of the phrenic nerves right and left had been studied in 30 muscles diaphragms of unknown breed adult domestic cats, 7 males and 23 females, and were fixed in 10% buffered formalin solution. After fixation and dissection, it was observed that the phrenic nerves ramified for the respective carnous parts of the muscle diaphragm, pars lumbalis, costalis and sternalis, and had finished in higher frequency in dorsolateral trunk and ventral branch (63.33%). We observed the following arrangements: dorsal, ventral and lateral branches (25.0%); dorsal branch and ventrolateral trunk (6.66%); dorsolateral and ventrolateral trunks (3.33%); dorsolateral trunk, lateral and ventral branches (1.66%). The phrenic nerves had distributed symmetrically in 11 samples (36.66%), only showing the termination in dorsolateral trunk and ventral branch. The dorsal branches supplied pars lumbalis (73.33% to right and 56.66% to the left) and pars costalis (13.33% to right and 10.0% to the left). The right dorsal branch supplied the crus mediale dexter of the right pillar (100.0%) and the left dorsal branch supplied the crus mediale sinister of the right pillar and the left pillar (100.0%). The lateral branches supply pars lumbalis (23.33% to right and 33.33% to the left), pars costalis (96.66% to right and 100.0% to the left) and pars sternalis (3.33% only to the right). The ventral branches supplied the ventral region of pars costalis (46.66 % to right and 43.33% to the left) and pars sternalis (96.66% to right and 100.0% to the left). Four female animals (13.33%) had shown fibers crossing proceeding from the left ventral branch for right antimere had been that in one of these samples (3.33%) occurred connection between the left ventral branch and the right.